Module: TransformCombinators

Defined in:

lib/transform_combinators.rb,
lib/transform_combinators/version.rb

Constant Summary

VERSION =

"0.1.0"

@@same =

->a { a }

@@hash_of =

->fields, hash {
  hash ||= {}
  fields.map { |(key, fn)| [key, fn.(hash[key])] }.to_h
}.curry

@@array_of =

->fn, value { value.kind_of?(Array) ? value.map(&fn) : [] }.curry

@@default =

->default, a { a.nil? ? default : a }.curry

@@scalar =

->a { a.kind_of?(Array) || a.kind_of?(Hash) ? nil : a }

@@integer =

->a { Integer(a) }

@@float =

->a { Float(a) }

@@null_string =

->a {
  if !a.nil?
    b = a.strip
    b.empty? ? nil : a
  else
    nil
  end
}

@@and_then =

->fn,a { a.nil? ? nil : fn.(a) }.curry